The optokinetic response in wild type and white zebra finches

Eckmeier D, Bischof H-J (2008)
Journal of Comparative Physiology, A: Neuroethology Sensory Neural and Behavioral Physiology 194(10): 871-878.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Optic flow is a main source of information about self movement and the three-dimensional composition of the environment during locomotion. It is processed by the accessory optic system in all vertebrates. The optokinetic response is elicited by rotational optic flow, e.g. in a rotating drum lined with vertical stripes. We investigated here the effect of rotational optic flow on the optokinetic response in wild type and white zebra finches. The highest stimulus velocity eliciting an optokinetic response (upper velocity threshold) was dependent on stimulus direction and illumination level, but was not different between the colour morphs. The upper velocity threshold was higher with temporal to nasal movements in monocularly exposed birds and symmetrical with binocular exposure. Its increase with illumination level followed Fechner's law and reached a plateau at about 560 Lux. In bright daylight, white birds did not show optokinetic responses. We conclude that the altered wiring of the visual system of white birds has no influence on accessory optic system function. The unwillingness of white birds to respond with optokinetic response in bright daylight may be due to a substantial lack of inhibition within the visual system as demonstrated earlier, which may enhance the sensibility to glare.
Stichworte
visual system; albinism; optic flow; accessory optic system; birds
Erscheinungsjahr
2008
Zeitschriftentitel
Journal of Comparative Physiology, A: Neuroethology Sensory Neural and Behavioral Physiology
Band
194
Ausgabe
10
Seite(n)
871-878
ISSN
0340-7594
eISSN
1432-1351
Page URI
https://pub.uni-bielefeld.de/record/1586256

Zitieren

Eckmeier D, Bischof H-J. The optokinetic response in wild type and white zebra finches. Journal of Comparative Physiology, A: Neuroethology Sensory Neural and Behavioral Physiology. 2008;194(10):871-878.
Eckmeier, D., & Bischof, H. - J. (2008). The optokinetic response in wild type and white zebra finches. Journal of Comparative Physiology, A: Neuroethology Sensory Neural and Behavioral Physiology, 194(10), 871-878. doi:10.1007/s00359-008-0358-7
Eckmeier, D., and Bischof, H. - J. (2008). The optokinetic response in wild type and white zebra finches. Journal of Comparative Physiology, A: Neuroethology Sensory Neural and Behavioral Physiology 194, 871-878.
Eckmeier, D., & Bischof, H.-J., 2008. The optokinetic response in wild type and white zebra finches. Journal of Comparative Physiology, A: Neuroethology Sensory Neural and Behavioral Physiology, 194(10), p 871-878.
D. Eckmeier and H.-J. Bischof, “The optokinetic response in wild type and white zebra finches”, Journal of Comparative Physiology, A: Neuroethology Sensory Neural and Behavioral Physiology, vol. 194, 2008, pp. 871-878.
Eckmeier, D., Bischof, H.-J.: The optokinetic response in wild type and white zebra finches. Journal of Comparative Physiology, A: Neuroethology Sensory Neural and Behavioral Physiology. 194, 871-878 (2008).
Eckmeier, Dennis, and Bischof, Hans-Joachim. “The optokinetic response in wild type and white zebra finches”. Journal of Comparative Physiology, A: Neuroethology Sensory Neural and Behavioral Physiology 194.10 (2008): 871-878.

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PMID: 18704442
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